Kavinder Dhaliwal created HAWQ-973:
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Summary: Check pi_varList in pxfheaders before setting headers
Key: HAWQ-973
URL: https://issues.apache.org/jira/browse/HAWQ-973
Project: Apache HAWQ
Issue Type: Bug
Components: PXF
Reporter: Kavinder Dhaliwal
Assignee: Goden Yao
{code}
add_projection_desc_httpheader
{code}
extracts the indices of columns to project from pi_varNumbers, but calculates
the length based on pi_targetList. This is similar to how ExecVariableList
handles projection. However there are cases where length(pi_targetList) >0 and
length(pi_varNumbers) == 0, so a condition on pi_varList needs to be added
before invoking add_projection_desc_httpheader as is done in ExecProject.
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